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Stabilize SSH stderr drain regression on macOS CI - #21

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iapyeh wants to merge 1 commit into
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fix/ssh-stderr-drain-ci-headroom
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iapyeh wants to merge 1 commit into
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fix/ssh-stderr-drain-ci-headroom

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@iapyeh

@iapyeh iapyeh commented Oct 9, 2026 •

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The macOS/Python 3.11 optimized suite failed in CI run 37916272407 when the 3 MB stderr drain regression exceeded its five-second deadline. The same run's normal suite and every other matrix leg passed.

Give this flow-control regression a finite 30-second deadline so loaded runners have scheduling headroom, while retaining the 3 MB payload and 32 KiB SSH window. Also assert the captured stderr prefix and successful exit status. Runtime timeout behavior is unchanged.

Validation: Python 3.11/Paramiko 4.0.0 credential-free suites passed in both source and release layouts, in normal and optimized modes (289 tests per suite, 25 skipped). Both layouts passed all nine dollar-syntax smoke checks, the package assert scan, and diff checks. The original failed CI run passed on retry, supporting a transient timing failure. This PR runs the existing full CI matrix.

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